Improvement in fire arches or furnaces of evaporating apparatus



v S. BERRY.

Furnace for Evaporating Pan.

Patented Nov. 17,1863.

Inventor;

Witnesses= 3 WW MM NiTED STATES SIDNEY BERRY, OF GRAND RAPIDS, MICHIGAN.

IMPROVEMENT IN FIRE ARCHES 0R FURNACES 0F EVAPORATING APPARATUS.

Specification forming part of Letters Patent No 10,399. dated Novemberl7, 1863.

To all whom it may concern.-

Be it known that I, SIDNEY BERRY, of Grand Rapids, in the State ofMichigan, have invented certain new and useful Improvements in theConstruction of Furnaces; and I here by declare that the following is atrue and exact description of the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the use of certain devices toprevent the radiation of heat from the sides, ends, and bottom of thefurnace, and confining its action to the pan in which liquids are placedfor evaporation.

Figure 1 in the drawings represents a longitudinal Vertical section ofmy furnace. Fig. 2 represents a tranverse vertical section taken nearthe chimney end of the furnace.

The letter D designates the outer wall of the furnace, and is built ofbrick, eight inches in thickness. Inside of the wall D and six inchesfrom it another wall, 0, is constructed, which is also eight inches inthickness. The space between D and O is covered at top with brick, andis designed for .an air-chamber. the side Walls, 0, a space,corresponding in form with that marked G, is filled with stucco made ofgypsum or sulphate of lime. On the upper surface of the stucco, which isconcave in form,

the inverted arch F is laid with brick, twelve inches in thickness. Thearch F terminates at each end in the walls B, likewise twelve Between toprevent the escape of heat. The grate-bars e are placed transverselyacross the interior of the inverted arch F, allowing space beneath themfor the convenient removal of cinders.

L represents the door, made double,ofplate iron, the space between theplates being filled with stucco.

K represents the chimney placed at the opposite end of the furnace fromthe door.

In the construction of my furnace, it will be seen that there is anextraordinary amount of non-conducting material between the fire and theexternal air, first, the exterior brick Wall, D, which is eight inchesin thickness, next the Wall 0 0f the same thickness, the layer ofstucco, from four to six inches in thickness, and the interior walls,B,twelve inches thick, with the addition of the air-chamber between Dand O, which extends around the furnace, except at the door end, thewhole so arranged as to reduce radiation to its minimum.

Having thus described my invention, what I claim. and desire to secureby Letters Patent, 1s

The walls D and O, with the air-chamber between them, the stucco layeror filling G, and the inverted brick arch F, terminating in walls B, thewhole constructed and arranged substantially as set forth. 7 r

In testimony that I acknowledge the forego ing as my own I affix mysignature hereunto in the presence of two witnesses.

\ SIDNEY BERRY.

Witnesses:

DAVID G. Oonvis, H. A. HERT.

